Stitcher wheel and guard



Oct. 2, 1923. 1,469,753

J. w. DI'RKSON ET AL sTITcHER WHEEL AND GUARD Filed Oct. 15 1920invented Acertain Vnew and useful Improve` f Be it known that we,

YPatented @et `2, i923.

4Joran Wl DIBKSONQOF KENT, Ann 'Lann CLOUGH, .QE AKRON, orrro,Assicfrons :To

' THE Masonl'rrnnnnn RUBBER oo MPANY, ,a conronnfrron onorrro.

Appucanon med 'otober 15,1920. 'sei-iai 1ra/nazie.

JOHN W. DmKso'N, a citizen of the United States, residing at Kent, inthecounty of Portage and State of Ohio,`and Lnn lil. CLOUGH, a citizen of Ythe United States, residing at Akrominlthe county of Summit and'State ofOh'io,hagve ments in Stitcher lVheels and Guardsyof which Vthefollowingis a specification.

Our invent-ion relates to improvements 1n stitcher wheel and guard andhas for its object the provision of mechanism for more expeditiouslystitching the fabric for'auto- Vmobile tires upon the carcass. w

More specifically, our `invention, pertains to the association with anysuitable stitcher wheel or mechanism, ofa guard device that ispositioned so .as ato receiveT the fabric, smooth it in relationtothestitcher wheel, and prevent said lfabric from coming into contactwith the wheel exceptalong itsy contacting edgel The improvements of ourinvention are shown Ain their essential features in the accompanyingdrawings in connection with the stitcher wheel arms which may be actu-Vated in vany suitable manner; these are illus-zv trated in associationwithfthe ringor man` drel whereon the carcass isv built. l j 'Amodification of our improvement is also illustrated as adapted forlighter work, but

Figure 1 illustrates'a'mandrel and carcassV thereon in sectional .viewwith two positions of the stitcher wheelsindiCated by dotted lilies,together Withthe two stitcher wheels and fragmentary portions of the stitcher` arms -sufiicient for explaining the purpose of our invention. y

Fig. 2 is a face View ofthe stitcherwheel and guard, and, Y

Fig. 3 is a similar view ofa modified form of our improved device.-Throughouteach' ofy the several 'figures of the drawings we haveemployed the samecharacter of refer# .ence to indicatev similar parts.

Referring, first7 to lig. 2, it will be seen' rthat the stitcher'wheel(a) is offapprovedV or well known type, being rotatably mountecluponthe'pivotedstitcher arm .n

its base to the dotted line position (d), al

referring to the yfullline and the Vpositions of Fig; 31,* Y .s K VInFig'. 3 the lighter guard 'memberfw vmeans for actuatingwthe stitcherwheel and y explain that said` stitcher wheelfi-s y adapted to beadvancedsuccessively fromjthe-'posr arm need notbe detailed, furthervthan to tion shown cn'geither side of Fig.' 1,7-aljong'Y v theside-wallofthe carcass adjacentto the bead as `indicatedbythed'otted line posii yl i tion (0); thence about the bead and along'r` as will be wellunderstoodby those skilled inthe art.4 i* Y v y In'the manufacture ofautomobileiti'resf out under the influence?ofcentrifugal force,

and suitable provision', preferably, .is made for pre-shapingfthe fabricasfi't isstitched n 1 into place upon-the v carcass; v

The means that We .employ and show in Fig. l--the said guard beingsecuredto the stub of the pivoted stitchen arm by ran gidity, are'secured aboveV land belowV the.

edge will be invariably presented to the" fabric in'` advance 4ofthe'operativefedge of the; i lstitcher wheel,y as will be appreciatedlby dotted line is associated 'with the stitchenwheel (a) thatvapproximates only half the fully. shaped Vguard of Fig. 2; For many'purposes-this Vmodification isl found ample forprefshap-` ing andsmoothingzthe fabric, although'obviously it is not as rigidfas the guardShown y 10o upon theyleft(` Referringagainlto yFig-Q1, itrwill beiy seenAth'at'three typical positions of the right and f .il i' Vleftfhand`stitching mechanismvarek sliovvn` i Y ranging.from'theposition assumed'at the Y' those positions@intoV which the` stitching. 'wheel-s andr`guard areactuated at-'th'e comV Y. Y

commencement o f the stitching operationtoy pletion ofthe stitchingoperation.

: This vfigure will'graphically demonstratefjl: 11o

thel fact 'thatwhile is. at all times Vthe rap-id 'rotation ofthemandrel -in form- I i ing the carcass causes the `fabric (e) 'to flyYas also indicatedbydotted 'linesfinlFi'g 1,l l.

ple form ofi vgua-rd l V'Vhiclicis" positioned v A e advancing operativeY :extension l(g) and nutw (g). 'Theendsofff the guard,Y in order toafford sufficient ri 85v f stitcher armas by-screws (f) therelation ofthe edge of the guard being such that its relatively .inadvance of 1itsassociated stitching,` fwheel, it does lnot in the .leest interfere withthe actual stitchingoperation, but instead, said guard effectivelycooperates With the stitching AWheel `and Asecures a 'much smoother andinore Yrapid application oir' A"the fabric, than is ordinarilyobtainable. Y

The pivoted sttcher arms are adapted to be actua-ted respectively bytheir cenneoting levers (la), but the actuating` mechanism Yhorinsnopafrt'of the present invention .and need not vbe rfurther'explained orshown.

l-laVi-ngnow described our improvements, as Apreferably embodied in asimple :forni of etitching'zwlieel'and n i'd, We claim as new, anddesire to :secure by 4Lettere Ret-ent, together Wit-h suchinodi'ications may be made anerely `by skill .in the fart, :the follow#I. l. The ,combination with aY -iiotatably inountedstitcher Wheelfof a.Uesliapedguard mounted etitoher Wheel, oli a :Ue-shaped guard :L einheretzitionarilfy mounted with respect to said stitcher Wheel,fand'pnsiti'oned in ad @rance of its operative edge terme-engage ment`with the :fabric V,acted upon; said zguurd 4vmember being rigidlyattached unen fboth nsides `,ofthe stiteherwheel, Substantially as VsetYforth.

3. The combinationV with aY rotatably mounted stitcher Wheel, of aineinber positioned ae completely enclosing hordllre 'guard aboutaportion of said stitcher Wheel .with ite `edge in advance of the'operative edge of the stitcher Wheeljand adapted tov be advanced :inunison with said Wheel, sub'- stantially ae set forth.

' 4Q rThe combination with a zp'ivoted ,stationzrry arm, fof la stitcheriur/.reel `rotatably .mounted thereon, .and a guard member .'secured`regir-Ward-ly Vvand 'forwardly about a sportion of said stitcher VWheel4vith lits erlge acentito, but in .aduanee fott' 'the operative ledge ofthe, stitcher Wheel, Aauhereby"the tabvrie is pre-shaped for thealot-ion :of ihe in testimony whereof uredo :nouv ieur signatures, Y

` JHN 5N. Dl-[RK U E l

